Abstract

The optogalvanic effect of doubly ionized uranium produced in a hollow-cathode discharge is studied by using various rare gases and their mixtures as fill gases. In general, the pressures at which the optogalvanic signal is optimized are higher than those that optimize the emission intensities, and, under equivalent experimental conditions, the enhancement of the optogalvanic signal is more than 1 order of magnitude greater than the enhancement of the emission intensity. When a single rare gas is used, the optogalvanic signal is found to increase when the ionization potential of the rare gas increases. The signals in Ne are 1 order of magnitude stronger than the signals in Xe. When a He–Xe mixture containing 1% Xe is used, signals are obtained that are, on the average, 30 times stronger than those in Ne. This enhancement behavior can be used as a signature of U iii transitions.

© 1989 Optical Society of America

Study of the emission intensities of doubly ionized uranium (U iii) in a hollow-cathode discharge

K. N. Piyakis and J. M. Gagné
J. Opt. Soc. Am. B 5(8) 1645-1649 (1988)

Optogalvanic measurement of isotope shifts of doubly ionized uranium (U iii) made using natural-U samples

K. N. Piyakis and J.-M. Gagné
J. Opt. Soc. Am. B 6(12) 2289-2294 (1989)

Simple method for identifying doubly ionized uranium (U III) produced in a hollow-cathode discharge

K. N. Piyakis and J. M. Gagné
Opt. Lett. 13(3) 198-200 (1988)

Optogalvanic detection of the Zeeman effect in a hollow-cathode discharge

Etienne Langlois and Jean-Marie Gagné
J. Opt. Soc. Am. B 4(7) 1222-1226 (1987)

Wavelengths and energy levels of doubly ionized uranium (U iii) obtained using a Fourier-transform spectrometer

Byron A. Palmer and Rolf Engleman
J. Opt. Soc. Am. B 1(4) 609-625 (1984)